| Round Rock to Rhondda | 4,766.65 mi (7,671.19 km) |
| Round Rock to Rhosllanerchrugog | 4,743.33 mi (7,633.65 km) |
| Round Rock to Rhyl | 4,718.73 mi (7,594.07 km) |
| Round Rock to Rhymney | 4,768.08 mi (7,673.48 km) |
| Round Rock to Richmond | 4,893.39 mi (7,875.14 km) |
| Round Rock to Rickmansworth | 4,881.62 mi (7,856.20 km) |
| Round Rock to Ripley | 4,805.00 mi (7,732.90 km) |
| Round Rock to Ripon | 4,770.37 mi (7,677.16 km) |
| Round Rock to Risca | 4,779.75 mi (7,692.26 km) |
| Round Rock to Rochdale | 4,760.91 mi (7,661.94 km) |
| Round Rock to Rochester | 4,926.94 mi (7,929.15 km) |
| Round Rock to Rock Ferry | 4,735.34 mi (7,620.79 km) |
| Round Rock to Rogerstone | 4,781.69 mi (7,695.39 km) |
| Round Rock to Romford | 4,908.49 mi (7,899.46 km) |
| Round Rock to Romsey | 4,860.05 mi (7,821.50 km) |
